Inventory Days on Hand: Formula, Benchmarks, and How to Improve It
Most brands can tell you their monthly revenue to the dollar, but have absolutely have no clue how many days their cash is sitting on a pallet! That second number is the one that can drain a growing brand without anyone noticing right away. Inventory days on hand tells you how long your money stays parked as product before it actually sells. For a food or beverage brand, and some wellness brands, a high number often means spoilage and expired stock headed for a write-off, while too few days leaves you stocking out and losing shelf space you fought hard to win. Here's the formula, what a sane benchmark looks like for your category, and the levers that actually move the number.
What Is “Inventory Days on Hand”?
Inventory days on hand is the average number of days it takes to sell through the inventory you're currently holding. If yours is 45, it means that at your current sales pace, the stock in your warehouse and on shelves will last about a month and a half.
You'll see the same idea under a few different names. Some people call it days inventory outstanding, others say days of inventory on hand or days sales of inventory. They all describe the same metric. It's also the flip side of inventory turnover, which counts how many times you sell through your stock in a year. High turnover means low days on hand, and vice versa. Once you've got the definition down, the math is simple.
The Inventory Days on Hand Formula
Here's how to calculate days on hand. The formula is short:
Inventory Days on Hand = (Average Inventory / Cost of Goods Sold) x 365
Three inputs, all of which you already have. Average inventory is the value of the stock you held over the period, usually the average of your beginning and ending inventory. Cost of goods sold is what that product cost you for the same period, not what you sold it for. And 365 is just the number of days in the year, so swap it for 90 if you're running the math on a quarter.
Say you're a brand carrying $50,000 in average inventory, and your cost of goods sold for the year runs $365,000. Plug it in: 50,000 divided by 365,000 gives you 0.137. Multiply by 365 and you land on 50 days on hand. So at your current pace, you're holding about seven weeks of product at any given time.
There's a shortcut if you already track turnover. Days on hand equals 365 divided by your inventory turnover ratio. A brand turning inventory 7.3 times a year is sitting at 50 days, same answer. Use whichever number you already have in front of you.
What Is a Good Inventory Days on Hand Benchmark?
I get asked for the magic number a lot, and the honest answer is that there isn't one. A good benchmark depends on your category, your shelf life, and your lead times. Anyone who hands you a single industry figure is selling something.
Perishable food and beverage brands generally need to run leaner, because the clock is working against them. If your product has a nine-month shelf life and you're carrying 120 days on hand, you're one slow quarter away from writing off product that expired in the warehouse. Shelf-stable goods have more room to work with, so a brand selling supplements or certain beauty products with a two-year shelf life can carry more days without the same spoilage risk building up.
The trade-off is real in both directions. Lower days on hand frees up cash and cuts your spoilage risk, but push it too far and you start stocking out, missing purchase orders, and giving a buyer a reason to hand your facing to a competitor. Higher days on hand protects availability, and it also ties up working capital and raises the odds you're eating expired product. The right answer sits between those two, and it's specific to you. Benchmark against your own category and your own lead times, not a generic figure pulled from a finance textbook.
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Why Inventory Days on Hand Matters for CPG Brands
Every extra day of inventory is a day your cash is sitting on a shelf instead of funding your next production run, your next retail launch, or your next hire. For a growth-stage brand, that's the whole game. Cash tied up in slow-moving stock is cash you can't put toward growth, and it's the kind of drag that doesn't show up on a P&L until you're staring at an empty bank account wondering where the money went.
Then there's spoilage. For perishable goods, a high days-on-hand number eventually turns into write-offs when product hits its expiration date sitting in your 3PL. You paid for it, you stored it, and now you're paying to dispose of it.
The other direction hurts too. Run too lean and you stock out, miss orders, and risk losing shelf space at retail, which is far harder to win back than it is to lose. Managing this well is a big part of protecting your margins, and it connects directly to the broader work of inventory management strategies for protecting margins and working capital. The days-on-hand number is where a lot of those decisions show up first.
How to Improve Your Inventory Days on Hand
Here's the practical part. These are the levers I reach for, roughly in the order I'd tackle them.
Start with demand forecasting. Most overstock traces back to buying against a gut feeling instead of real demand signals. Tighten your forecast and you buy closer to what you'll actually sell, which pulls days on hand down without risking availability.
Next, right-size your safety stock. You want enough buffer to cover the variability in demand and lead times, and not a case more. Carrying safety stock you never dip into is just expensive insurance against a risk that isn't there.
Tighten your reorder points and work on shortening supplier lead times. When your supplier can turn an order in two weeks instead of six, you can hold less and still cover yourself. Shorter lead times let you run leaner across the board.
Cut your dead stock and slow movers, and get honest about SKU count. Every SKU that doesn't sell is cash trapped on a shelf. If you've got a flavor or shade that's been sitting for six months, that's money you could redeploy into the products that move. This is one of the fastest ways to reduce inventory days.
Use first-expired-first-out rotation so you're shipping the oldest product first. It sounds obvious, and plenty of brands still write off product that expired behind newer stock nobody rotated.
Sync your inventory across channels. If you're overstocked at retail and short on Amazon, your blended days on hand looks fine while both channels underperform. Visibility across direct-to-consumer, wholesale, and Amazon keeps you from being long in one place and empty in another.
Where your supplier terms allow, order smaller quantities more often. Bigger buys feel efficient on a per-unit basis, and they balloon your days on hand. Smaller, more frequent orders keep the number down, and that's often the simplest way to lower days on hand once forecasting is solid.
Related Inventory Metrics to Track
Days on hand reads best next to a few other numbers. Inventory turnover is its inverse and tells you how many times you cycle through stock in a year. Sell-through rate shows what percentage of received inventory you actually sold in a window, which is useful for spotting slow movers early. Weeks of supply is the same idea as days on hand in a coarser unit, handy for planning production runs. And safety stock tells you how much buffer you're carrying against uncertainty. None of these means much in isolation. Read your days on hand alongside them and you get the real picture instead of a single number that can flatter or scare you for the wrong reasons.
How Bravo CPG Helps You Manage Days on Hand
Hitting the right days on hand isn't a spreadsheet problem you solve once. It takes ongoing demand forecasting, supplier coordination, and clear visibility across every channel, and that's a lot to hold together on a lean team already stretched thin. Bravo CPG is an embedded operations team for growth-stage food, beverage, beauty, and wellness brands. We combine hands-on execution with senior-level ownership, taking full responsibility for production, co-man and 3PL management, demand planning, wholesale orders, freight, and more. Our outsourced inventory management helps brands forecast demand, right-size inventory, and free up working capital without adding a full-time hire. The goal is simple: help you scale profitably without operational chaos.
Frequently Asked Questions
How do you calculate inventory days on hand?
Divide your average inventory by your cost of goods sold, then multiply by the number of days in the period, which is 365 for a full year. Average inventory is usually the average of your beginning and ending stock value for that period.
What is a good inventory days on hand?
It depends on your category and shelf life. Perishable food and beverage brands should run leaner because product expires, while shelf-stable goods can carry more. Benchmark against your own lead times rather than one industry figure.
What is the difference between days on hand and inventory turnover?
They're inverses of each other. Turnover counts how many times you sell through your inventory in a period, while days on hand converts that same information into a number of days. If turnover is 7.3, days on hand is 50.
Is high or low days on hand better?
Lower generally frees up cash and cuts spoilage risk, but push it too low and you start stocking out. You're aiming for the right balance for your category and lead times, which usually isn't the lowest number you could hit.
How can CPG brands reduce inventory days on hand?
Through sharper demand forecasting, right-sized safety stock, tighter reorder points, cutting dead stock and slow SKUs, and syncing inventory across retail, direct-to-consumer, and Amazon so you're not overstocked in one channel and short in another.
